Table 1. Photophysical Properties of BDP-CR, BDP, and CR^a.

molecule	λabs (nm)	λem (nm)	ε (× 104 M–1 cm–1)	Φf (%)	ΦΔ (%)
BDP-CR	665 + 804	702	17.3 (665 nm); 22.1 (804 nm)	5.2	42.3
BDP	665	704	9.52 (665 nm)	27	55.8
CR	796	802	22.1 (796 nm)	0.2	0.85

^aλ_abs: absorption maximum wavelength (nm). λ_em: emission maximum wavelength (nm). ε: molar extinction coefficient (10⁴ M^–1 cm^–1). Φ_f: fluorescence quantum yield. Φ_Δ: singlet oxygen quantum yield.